CN103240067B - Persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and preparation method and application thereof - Google Patents
Persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and preparation method and application thereof Download PDFInfo
- Publication number
- CN103240067B CN103240067B CN201310144163.2A CN201310144163A CN103240067B CN 103240067 B CN103240067 B CN 103240067B CN 201310144163 A CN201310144163 A CN 201310144163A CN 103240067 B CN103240067 B CN 103240067B
- Authority
- CN
- China
- Prior art keywords
- composite solution
- persulfate
- activated carbon
- regeneration
- phenol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention belongs to the technical field of environment friendliness and in particular relates to a persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and a preparation method and application thereof. The preparation method comprises the following steps: adding a proper amount of sodium bicarbonate and sodium hydroxide into the persulfate stock solution to obtain a persulfate composite solution; and activating by using a ferrous chloride solution, wherein the persulfate composite solution generates sulfate ion (S2O82-) and high-strength sulfate radical (.SO42-) through molecular oxidation or chemical activation, and the activated product can rapidly decompose the phenol adsorption saturated activated carbon. The prepared persulfate composite solution is used for regenerating activated carbon for drinking water plants or industrial enterprises where the activated carbon is used for purifying water, and the persulfate composite solution is low in cost and simple in process, hardly causes pollution and has wide economic benefits and application prospects.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of sodium peroxydisulfate composite solution for the regeneration of Adsorption of Phenol saturated activity charcoal and compound method and application.
Background technology
Under the outer water pollution of Now Domestic continues the background of aggravating, active carbon, as a kind of efficient adsorption material, has been widely used in drinking water advanced treatment technical process.Active carbon can remove multiple different organic pollution effectively from water body, but constantly reach Adsorption of Organic saturation state through the active carbon of Long-Time Service, need to change in time or regenerate to ensure that water treatment efficiency regeneration method of active carbon has conducted a research and applied both at home and abroad, be mainly divided three classes: bioanalysis, heating and chemical method.The bio-regeneration of active carbon, at present also lessly see there is successful report, its major defect is that bioanalysis is only applicable to biodegradable polluter, for easily biological-degradable and toxic organics then can not be suitable for, and residual end product is adsorbed on activated carbon surface, regeneration not exclusively; High-temperature heating method of reproduction is huge to active carbon loss, and permissive waste is higher than 10%, and freight is high.Adopt the active carbon that persulfate composite solution regeneration Adsorption of Phenol is saturated, key is the preparation of persulfate composite solution, and its one-tenth is grouped into and directly determines the saturated regenerating active carbon effect of Adsorption of Phenol.Adsorption of Phenol saturated activity charcoal can repeatedly be reused after regeneration, and cost is little, pollution-free, and activated carbon adsorptive capacity loss is very little, and therefore this research extremely meets the requirement of China's high efficiency, low cost, resource in environmental pollution improvement.
Persulfate is a kind of Strong oxdiative medicament, usually occur with the form of sodium peroxydisulfate or potassium peroxydisulfate, there is the oxidation operation characteristic of wide spectrum, sulfate free-radical oxidation Pyrogentisinic Acid type organic has sooner, stronger oxidation characteristic, and persulfate composite solution adopts the method for ferrous sulfate activation.The lasting characterization of adsorption keeping active carbon Pyrogentisinic Acid is very important, and this method affects water factory hardly and normally runs, and can realize the in-situ regeneration of active carbon, is extremely important.
Summary of the invention
The object of the present invention is to provide little, the free of contamination persulfate composite solution for the regeneration of Adsorption of Phenol saturated activity charcoal of a kind of cost and compound method and application.
The compound method of the persulfate composite solution for the regeneration of Adsorption of Phenol saturated activity charcoal provided by the invention, concrete steps are:
The first step: configuration sodium peroxydisulfate stoste
Taking 35-45g persulfuric acid sodium salt is dissolved in 1L distilled water, preparation sodium peroxydisulfate stoste;
Second step: preparation sodium peroxydisulfate composite solution
In persulfate stoste, add 2-3g sodium acid carbonate, 1.5-2g NaOH, leave standstill mixing 30-45min, place refrigerator for subsequent use;
3rd step: activation persulfate composite solution
The ratio being 10g/L solution of ferrous chloride according to 1L sodium peroxydisulfate composite solution interpolation 10-12mL concentration activates, and rapid stirring 2.5-3min, uses after stirring immediately.
The sodium peroxydisulfate composite solution prepared by the inventive method can be used for the regeneration process for Adsorption of Phenol saturated activity charcoal.
Feature of the present invention is: using the persulfate of cheapness as regenerative agent, the active carbon that the strong oxidizing property regeneration Adsorption of Phenol utilizing the sulfate free radical of persulfate molecule and generation after frerrous chloride activation to have is saturated; Adding appropriate NaOH in regenerated liquid regulates pH and sodium acid carbonate as cushioning liquid, with the acidification trend of actified solution in activation process during object is, avoids the equipment corrosion problem produced by acidify solution; Activation method adopts frerrous chloride as catalyst, decreases firing equipment than solution Thermochemical Activation method; The afterproduct of actified solution regeneration phenol saturated activity charcoal is hydrogen ion, sulfate radical and a small amount of iron ion, and product is nontoxic material, and removes easily through water cleaning.This persulfate composite solution Pyrogentisinic Acid adsorbs saturated regenerating active carbon successful; compared with existing high temperature thermal decomposition method; cost is little, pollute less, technique is simple; do not need transfer activity charcoal to specific regeneration factory and regenerating unit; in-situ regeneration can be realized; be applicable to drinking water plant and the daily regenerating active carbon use of Sewage Plant, meet the requirement of China's high efficiency, low cost, resource in environmental pollution improvement.
The invention has the beneficial effects as follows:
The present invention take persulfate as the regenerative agent of phenol saturated activity charcoal, after frerrous chloride activation, produce the effect of proper proportion sulfate combined with radical molecular oxidation, this persulfate composite solution has the effect of the phenol that fast decoupled is tightly held by activated carbon, can be applicable to water factory's regenerating active carbon dispose, compared with conventional regeneration mode, cost is little, pollute less, technique is simple, has economic benefit and application prospect widely.
Detailed description of the invention
The invention is further illustrated by the following examples.
The preparation of persulfate composite solution
The first step: configuration sodium peroxydisulfate stoste.
Adopt technical pure sodium peroxydisulfate (purity is greater than 98%), take 35-45g sodium peroxydisulfate and be dissolved in 1L distilled water, preparation sodium peroxydisulfate stoste.According to the weight that need regenerate phenol saturated activity charcoal, prepare according to the ratio of 1g active carbon configuration 45-60mL persulfate stoste;
Second step: preparation sodium peroxydisulfate composite solution.
In persulfate stoste, add 2-3g sodium acid carbonate, 1.5-2g NaOH, leave standstill mixing 30-45min, place refrigerator for subsequent use;
3rd step: activation persulfate composite solution.
The ratio being 10g/L solution of ferrous chloride according to 1L sodium peroxydisulfate composite solution interpolation 10-12mL concentration activates, and rapid stirring 2.5-3min, uses after stirring immediately.
Embodiment 1
Containing phenol concentration in the waste water that certain phenol production enterprise discharges is 600-42000mg/L, first wastewater dilution is carried out headed by the wastewater treatment process adopted, phenol content is reduced to about 500mg/L, by simply precipitating the suspended particulate substance in rear removal phenolic waste water, after process, phenol content can be reduced to about 300-350mg/L, now waste water enters activated carbon filter and carries out adsorption treatment, initial stage is when using, the clearance of active carbon Pyrogentisinic Acid can reach 90-95%, phenol content is reduced to 15-30mg/L further, after 12 months use, the adsorption efficiency of active carbon Pyrogentisinic Acid is reduced to about 40%, water outlet phenol content 180-200mg/L, regeneration process experiment is carried out to this active carbon.
Get appropriate Adsorption of Phenol saturated activity charcoal to take out, put into preprepared regeneration reactor, reactor diameter is 30cm, the right circular cylinder of height 60m, water inlet and delivery port are set, adopt the regeneration of upward flow, after step regeneration, get activated carbon sample analysis, leading indicator is the change before and after Adsorption of Phenol.
Can draw to draw a conclusion by experimental study: after regeneration, the removal efficiency of active carbon Pyrogentisinic Acid is from close to saturation state 40%, returns to about 85%, water outlet phenol concentration is recovered to be low to moderate about 30-40mg/L, continuously the 15 day time of monitoring, and treatment effect is stablized.
Embodiment 2
Certain chemical enterprise adopts activated carbon filtration technique as sewerage advanced treatment process, and sewage ran through 1 year, and active carbon Pyrogentisinic Acid adsorption efficiency obviously reduces, and the clearance of Pyrogentisinic Acid about 65% is reduced to 7% from original state.The phenol that this chemical enterprise uses is for manufacturing the raw material of isopropylbenzene, and the process of Workshop Production black water adopts hydrolysis acidification aerobic process two stage treatment to add charcoal absorption tertiary treatment.Secondary treatment yielding water COD is 240-360mg/L, wherein phenol content is about 10% of COD, after charcoal absorption, initial stage process water phenol concentration is 8-13mg/L, after charcoal absorption efficiency reduces, phenol concentration is increased to about 50mg/L, therefore adopts persulfate composite solution to carry out the regeneration test of phenol saturated activity charcoal.
Use solution reclaiming process directly to carry out in active carbon filter tank inside, tank base is intake, the upward flow mode of top water outlet, and constantly take out activated carbon sample in process of the test and analyze, leading indicator is phenol removal efficiency.Can draw to draw a conclusion by experimental study: phenol saturated activity charcoal was through the regeneration of 3 hours, phenol removal efficiency returns to about 42-45% from 7%, after regeneration in 5 hours, phenol removal efficiency is about 53-55%, process water phenol concentration is 10-15mg/L, meets the related request of China's " sewage discharge water standard ".
Reference examples
Certain laboratory adopts carries out test without used active carbon, and soaked and drip washing with containing high concentration phenol solution by active carbon, make active carbon reach Adsorption of Phenol saturated (adsorption efficiency is zero), the active carbon that adsorbing phenol is saturated carries out regeneration test.Test is carried out in special container, diameter 30cm, high 60cm, the regeneration of upward flow, and after regeneration, get activated carbon sample analysis, the adsorption efficiency of activated carbon sample Pyrogentisinic Acid returns to 82-90%.
Claims (3)
1., for the sodium peroxydisulfate composite solution compound method of Adsorption of Phenol saturated activity charcoal regeneration, it is characterized in that concrete steps are:
The first step: take 35-45g sodium peroxydisulfate and be dissolved in 1L distilled water, prepares to obtain persulfate stoste;
Second step: add 2-3g sodium acid carbonate in persulfate stoste, 1.5-2g NaOH, leaves standstill mixing 30-45min, obtains persulfate composite solution;
3rd step: the ratio being 10g/L solution of ferrous chloride according to 1L persulfate composite solution interpolation 10-12mL concentration activates, rapid stirring 2.5-3min.
2. the sodium peroxydisulfate composite solution obtained by compound method described in claim 1.
3. the application of sodium peroxydisulfate composite solution according to claim 2 in Adsorption of Phenol saturated activity charcoal regeneration process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310144163.2A CN103240067B (en) | 2013-04-24 | 2013-04-24 | Persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310144163.2A CN103240067B (en) | 2013-04-24 | 2013-04-24 | Persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103240067A CN103240067A (en) | 2013-08-14 |
| CN103240067B true CN103240067B (en) | 2015-06-17 |
Family
ID=48920150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310144163.2A Expired - Fee Related CN103240067B (en) | 2013-04-24 | 2013-04-24 | Persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103240067B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347561A (en) * | 2015-11-26 | 2016-02-24 | 常州大学 | Integrated device for purifying phenol-containing geothermal water |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA785864B (en) * | 1978-10-18 | 1979-12-27 | Anglo Amer Corp South Africa | Regeneration of activated carbon |
| CN102755875A (en) * | 2012-07-04 | 2012-10-31 | 浙江工商大学 | Regenerating method of activated carbon after absorbing organic matters |
-
2013
- 2013-04-24 CN CN201310144163.2A patent/CN103240067B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103240067A (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103203227B (en) | Method for absorbing saturated active carbon by in situ regeneration of peroxysulphate | |
| CN101337707B (en) | Method for processing dimethylamine waste water by ion-exchange method | |
| CN103265988B (en) | Method for purifying natural gas | |
| CN102162036B (en) | Process for enriching copper and nickel in electroplating copper-nickel mixed waste water | |
| CN105688825A (en) | Method for preparing magnetic adsorbents on basis of iron-based metal-organic framework materials and application of magnetic adsorbents | |
| CN102276082A (en) | Treatment method of high-salinity organic wastewater | |
| CN103721692B (en) | A kind of regeneration method of waste-powder active carbon | |
| CN111115902A (en) | Oil and fluorine removing process for high-salinity organic wastewater | |
| CN103240067B (en) | Persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and preparation method and application thereof | |
| CN203820581U (en) | High-concentration coking desulfurization waste liquid treatment device | |
| CN203577611U (en) | Formaldehyde waste gas purifying device | |
| CN102963960B (en) | Method for simultaneously recycling sulfuric acid and organic substances in m-cresol production wastewater | |
| NL2029939B1 (en) | Treatment process for purifying chlorine-containing wastewater by crystallization of ammonium salt | |
| CN103127913A (en) | Nanoscale adsorbent used for treating micropollutants in water | |
| CN203112622U (en) | Biochemical effluent advanced treatment and recycling device for coking wastewater | |
| CN102372337B (en) | Method for advanced treatment and recycle of papermaking wastewater | |
| TWI478762B (en) | System and method for reducing h2s contained in gas | |
| CN103212390B (en) | In-situ regeneration method of trichloromethane-adsorbed saturating activated carbon | |
| CN205222887U (en) | Multiple high grade oxidation catalytic waste water treating device | |
| CN203683269U (en) | Device for efficiently removing trace heavy metal ions in lead storage battery wastewater | |
| CN103011463A (en) | Method for removing zirconium in sewage | |
| CN208594054U (en) | A kind of poor amine liquid device of hybrid resin bed purification | |
| CN205420000U (en) | Chemical nickel plating effluent treatment plant | |
| CN102001746A (en) | Semicoke bacteria filter and method for advanced treatment of coal gasification wastewater using same | |
| CN113233696B (en) | Plastic electroplating chemical nickel wastewater treatment system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20180424 |